The original form of Attack on Titan was manga. The success of the manga led to the creation of the anime adaptation. The manga provided the foundation and storylines that were brought to life on the screen.
The Attack on Titan manga corresponding to season 4 continues the intense and captivating tale. It features intense battles, character growth, and plot twists that fans have been eagerly awaiting.
Attack on Titan Season 2 stuck quite closely to the manga. There were maybe one or two additions or changes to make it work better on screen, but it didn't deviate significantly from the original source.
It depends on where the anime left off. You might want to check online forums or manga guides to determine the exact starting point. Sometimes, it's best to start from the beginning to catch any nuances you might have missed in the anime.